Home / 156,640.65-234,644.95-72,283.61

Finding the Fourth Proportional to 156,640.65, 234,644.95 and 72,283.61

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Solution

The fourth proportional to 156,640.65, 234,644.95 and 72,283.61 is: 108,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.65 : 234,644.95 = 72,283.61 : x
  2. Step 2: Convert to fraction form
    156,640.65/234,644.95 = 72,283.61/x
  3. Step 3: Cross multiply
    156,640.65x = 234,644.95 × 72,283.61
  4. Step 4: Simplify right side
    156,640.65x = 16,960,984,460.17
  5. Step 5: Solve for x
    x = 16,960,984,460.17/156,640.65
  6. Step 6: Final answer
    x = 108,279.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.